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Simpangan baku dari data 4,5,6,6,4 adalah…

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I. Roy

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Mahasiswa/Alumni Universitas Negeri Surabaya

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$x with minus on top equals fraction numerator 4 plus 5 plus 6 plus 6 plus 4 over denominator 5 end fraction equals 5$

$S equals square root of fraction numerator left parenthesis 4 minus 5 right parenthesis squared plus left parenthesis 5 minus 5 right parenthesis squared plus left parenthesis 6 minus 5 right parenthesis squared plus left parenthesis 6 minus 5 right parenthesis squared plus left parenthesis 4 minus 5 right parenthesis squared over denominator 5 end fraction end root$

$S equals square root of fraction numerator left parenthesis negative 1 right parenthesis squared plus left parenthesis 0 right parenthesis squared plus left parenthesis 1 right parenthesis squared plus left parenthesis 1 right parenthesis squared plus left parenthesis negative 1 right parenthesis squared over denominator 5 end fraction end root$

$S equals square root of 4 over 5 end root equals fraction numerator 2 over denominator square root of 5 end fraction cross times fraction numerator square root of 5 over denominator square root of 5 end fraction equals 2 over 5 square root of 5$